<!DOCTYPE html>
<html>
<head>
    <style>
h1{
    text-align: center;
}
table{
    
    width: 100%;
    text-align: center;
    font-size: 20px;
    border-collapse: collapse;
}
th{
    background-color:bisque}
td,th{
    border: 2px solid black;
    
}
    </style>
</head>
<body>
    <h1>表格</h1>
    <table id="tableid">
<tr>
    <th>姓名</th>
    <th>联系方式</th>
    <th onmouseover="st()">操作</th>
</tr>
<tr>
    <td>小明</td>
    <td>13888888888</td>
    <td><button onclick="xinzeng()">新增</button><button onclick="bianji(this)">编辑</button><button onclick="shanchu(this)">删除</button></td>
</tr>
</table>
<script src="./js/new.js"></script>
</body>
</html>